Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II

We present the second and final release of optical spectroscopy of Type Ia supernovae (SNe La) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra of 30 SNe Ia observed in the course of CSP-I and 234 spectra...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Folatelli, Gastón
Formato: Articulo
Lenguaje:Inglés
Publicado: 2024
Materias:
Ciencias Astronómicas
machine-readable tables
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/167562
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-167562
record_format dspace
spelling I19-R120-10915-1675622024-06-27T20:05:03Z http://sedici.unlp.edu.ar/handle/10915/167562 Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II Folatelli, Gastón 2024 2024-06-27T14:44:37Z en Ciencias Astronómicas machine-readable tables We present the second and final release of optical spectroscopy of Type Ia supernovae (SNe La) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra of 30 SNe Ia observed in the course of CSP-I and 234 spectra of 127 SNe Ia obtained during CSP-II. We also present 216 optical spectra of 46 historical SNe Ia, including 53 spectra of 30 SNe Ia observed by the Calán/Tololo Supernova Survey. We combine these observations with previously published CSP data and publicly available spectra to compile a large sample of measurements of spectroscopic parameters at maximum light, consisting of pseudo-equivalent widths and expansion velocities of selected features for 232 CSP and historical SNe Ia (including more than 1000 spectra). Finally, we review some of the strongest correlations between spectroscopic and photometric properties of SNe Ia. Specifically, we define two samples: one consisting of SNe Ia discovered by targeted searches (most of them CSP-I objects) and the other composed of SNe Ia discovered by untargeted searches, which includes most of the CSP-II objects. The analyzed correlations are similar for both samples. We find a larger incidence of SNe Ia belonging to the cool and broad-line Branch subtypes among the events discovered by targeted searches, shallow-silicon SNe Ia are present with similar frequencies in both samples, while core normal SNe Ia are more frequent in untargeted searches. La lista completa de autores puede verse en el archivo asociado. Instituto de Astrofísica de La Plata Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
machine-readable tables
spellingShingle Ciencias Astronómicas
machine-readable tables
Folatelli, Gastón
Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II
topic_facet Ciencias Astronómicas
machine-readable tables
description We present the second and final release of optical spectroscopy of Type Ia supernovae (SNe La) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra of 30 SNe Ia observed in the course of CSP-I and 234 spectra of 127 SNe Ia obtained during CSP-II. We also present 216 optical spectra of 46 historical SNe Ia, including 53 spectra of 30 SNe Ia observed by the Calán/Tololo Supernova Survey. We combine these observations with previously published CSP data and publicly available spectra to compile a large sample of measurements of spectroscopic parameters at maximum light, consisting of pseudo-equivalent widths and expansion velocities of selected features for 232 CSP and historical SNe Ia (including more than 1000 spectra). Finally, we review some of the strongest correlations between spectroscopic and photometric properties of SNe Ia. Specifically, we define two samples: one consisting of SNe Ia discovered by targeted searches (most of them CSP-I objects) and the other composed of SNe Ia discovered by untargeted searches, which includes most of the CSP-II objects. The analyzed correlations are similar for both samples. We find a larger incidence of SNe Ia belonging to the cool and broad-line Branch subtypes among the events discovered by targeted searches, shallow-silicon SNe Ia are present with similar frequencies in both samples, while core normal SNe Ia are more frequent in untargeted searches.
format Articulo
Articulo
author Folatelli, Gastón
author_facet Folatelli, Gastón
author_sort Folatelli, Gastón
title Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II
title_short Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II
title_full Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II
title_fullStr Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II
title_full_unstemmed Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II
title_sort optical spectroscopy of type ia supernovae by the carnegie supernova projects i and ii
publishDate 2024
url http://sedici.unlp.edu.ar/handle/10915/167562
work_keys_str_mv AT folatelligaston opticalspectroscopyoftypeiasupernovaebythecarnegiesupernovaprojectsiandii
_version_ 1807223524180361216

Ejemplares similares